OK 53.16 SPEZIAL

OK 53.16 SPEZIAL is a double‑coated stick electrode that combines the running characteristics of a rutile coating with the mechanical strength of a basic coating. It can be used on both AC and DC power sources and is suitable for small transformers with low open‑circuit voltage (OCV).

Key Features

• Double coating (rutile + basic) for stable arc and good mechanical properties
• Works on both AC and DC polarity
• Low minimum AC OCV (50 V) – ideal for small transformers
• Low diffusible hydrogen (< 10 ml/100 g)
• Meets multiple international classifications and approvals

Specifications

• Classification: SFA/AWS A5.1 E7016, EN ISO 2560‑A E 38 2B 32 H10
• Welding current: AC, DC±
• Coating type: Basic covering
• Alloy type: Carbon Manganese
• Min AC OCV: 50 V
• Diffusible hydrogen: < 10 ml/100 g
• Tensile strength (as welded): 530 MPa
• Yield strength (as welded): 450 MPa
• Elongation: 28 %
• Impact value (as welded, –20 °C): 90 J
• Deposition rates (example 4.0 × 450 mm): 1.65 kg/h at 120‑190 A, 28 V, 59 % efficiency

Applications

• General structural steel welding
• Heavy‑section welds requiring good penetration
• Low‑hydrogen requirements for high‑strength joints
• Field welding with portable transformers
• Positional welding in varied environments